Simple categories matching perennial:

• herb,
• species,
• bunchgrass,
• plant,
• river,
• fruit,
• antigen,
• issue,
• grass,
• forage,
• planting,
• vine,
• vegetable,
• wildflower,
• tree,
• veggie,
• seed,
• clover,
• flower,
• ornamental,
• legume,
• weed,
• pest,
• native,
• shrub,
• crop,
• host,
• allergen,
• group,
• pasture,

Members with property perennial:

• thyme,
• lychnis,
• bluegrass,
• rosemary,
• durian,
• sage,
• cone_flower,
• cockroach_allergen,
• thorny_asparagus,
• asparagus,
• fine_fescue,
• tree,
• anemone,
• lavender,
• horseradish,
• sedum,
• tagasaste,
• pine,
• oak,
• fennel,
• sorrel,
• oregano,
• orange,
• cilantro,
• rhubarb,
• vine_crop,
• achillea,
• alfalfa,
• catnip,
• mint,
• cereal_crop,
• litchi,
• guava,
• common_daisy,
• bent,
• forest_herb,
• bay,
• various_clover,
• red_vine,
• lemon_thyme,
• sunflower,
• legume,
• zinnia,
• jasmine,
• blackberry,
• aster,
• daisy,
• paeony,
• pinus,
• daylily,
• chaparral_figure,
• north-platte_river,
• composite_daisy,
• ornamental_grass,
• forest_tree,
• red_fescue,
• banana,
• smooth_brome,
• cotoneaster,
• trifolium-pratense_clover,
• sweet_marjoram,
• kiwi,
• sand_coreopsis,
• hickory,
• lucerne,
• pistachio,
• holly,
• banyan,
• fern,
• japanese,
• thistle,
• rumex,
• rhododendron,
• poplar,
• indoor_mold,
• wild_rose,
• phalaris,
• sweet_pea,
• orchid,
• beetroot,
• strawberry,
• pear,
• pinus-edulis_pinyon,
• solomons_seal,
• larkspur,
• grapevine,
• indian_grass,
• pomelo,
• broadleaf_evergreen,
• pachysandra,
• cornflower,
• ageratum,
• dallisgrass,
• african_daisy,
• coffee,
• lupin,
• apple_malus,
• pokeweed,
• chicory,
• crested_wheatgrass,
• clover,
• hibiscus,
• ornamental_tree,
• snapdragon,
• carex,
• kangaroo_grass,
• passion_flower,
• asparagus_artichoke,
• aloe,
• wheat_grass,
• larrea,
• penstemon,
• bamboo,
• mangosteen,
• shrub,
• smilax,
• fescue,
• raspberry,
• blues,
• citrus,
• grape,
• lovage,
• flower,
• stonecrop,
• herb,
• red,
• forest_bluegrass,
• royal_catchfly,
• almond,
• purple_coneflower,
• food,
• borneo_mahogany,
• mallow,
• dill,
• grass,
• apple,
• aspidistra,
• artemisia,
• willow,
• honeysuckle,
• false_brome,
• cinnamon,
• little_bluestem,
• mum,
• blue_fescue,
• ochna,
• gladiolus,
• wild_lettuce,
• bladder_saltbush,
• fuchsia,
• tamarind,
• mango,
• avocado,
• plantain,
• nematode,
• smooth_bromegrass,
• basil,
• mountain_mahogany,
• cosmos,
• sedge,
• dahlia,
• periwinkle,
• cockatoo_grass,
• scirpus,
• pineapple_sage,
• annual_bluegrass,
• lily,
• acacia,
• elder,
• chickweed,
• bunch_bluegrass,
• cacao,
• germander,
• crabgrass,
• cordgrass,
• mold,
• rambutan,
• crocus,
• petunia,
• mexican_tarragon,
• coarse_fescue,
• rough_fescue,
• sweat_pea,
• aphid,
• tall_fescue,
• french_tarragon,
• carrot,
• peppermint,
• shrub_rose,
• yarrow,
• woody_crop,
• columbine,
• populus,
• perennial_ryegrass,
• rue,
• tea,
• blueberry,
• paspalum,
• sycamore_creek,
• timothy_grass,
• rose,
• brome,
• bromegrass,
• ivy,
• tall_wheatgrass,
• onion_chive,
• bindweed,
• pineapple,
• oak_creek,
• southernwood,
• tulip,
• sweet_fennel,
• palm,
• neem,
• elephant_grass,
• familiar_tulip,
• pasture_grass,
• hay,
• tarragon,
• orange-balsam_thyme,
• artichoke,
• chive,
• cassia,
• cockroach_antigen,
• chrysanthemum,
• spear_grass,
• chamomile,
• ephedra,
• delphinium,
• ryegrass,
• cashew,
• licorice_mint,
• thyme_oregano,
• winter_wheat,
• water_apple,
• lemon_verbena,
• papaya,
• food_quality,
• coneflower,
• native_millet,
• nimblewill,
• breadfruit,
• geranium,
• slug,
• berry_bush,
• cocksfoot,
• big_bluestem,
• phlox,
• western_wheatgrass,
• astragalus,
• ladino_clover,
• wisteria,
• saltbush,
• oregano_spread,
• caraway_thyme,
• azalea,
• olive,
• meadow_bromegrass,
• iris,
• salvia,
• white_salvia,
• spiraea,
• spinach,
• forest_plant,
• parsley,
• idaho_fescue,
• lupine,
• vetch,
• daffodil,
• timothy,
• monkey_grass,
• nightshade,
• perennial_rye,
• clematis,
• walnut,
• tree_species,
• peony,
• potato,
• strawberry_clover,
• purple_nutsedge,
• marjoram,
• canna,
• indoor_inhalant,
• native_grass,
• bush,
• intermediate_wheatgrass,
• wheatgrass,
• tree_crop,
• desert_marigold,
• candytuft,
• hyssop,
• phalaris_pasture,
• sumac,
• leafy_spurge,
• field-bindweed_convolvulus,
• moonshine_yarrow,
• hosta,
• ornamental,
• japanese_spirea,
• pansy,
• caterpillar,
• coconut,
• pet_allergen,
• silver-lace_vine,
• quackgrass,
• white_clover,
• sweet_clover,
• yellow-flag_iris,
• evergreen_shrub,
• siberian_iris,
• dandelion,
• red_honeysuckle,
• maple,
• longan,
• cherry,
• amenity_tree,
• perennial_herb,
• royal_poinciana,
• common_saltbush,
• coriander,
• marigold,
• lilac,
• jack_fruit,
• rye,
• wild_rye,
• weeping_grass,
• veldt_grass,
• goldenrod,
• nasturtium,
• cat,
• rose_bush,
• vine,
• klein_grass,
• gamba_grass,
• coreopsis,
• bluebell,
• big_sagebrush,
• wild_buckwheat,
• slender_wheatgrass,
• cross_vine,